From my understanding Loaches can take years to reach a foot in length. If this occurs I will certainly exchange the fish. As I do not want them to be uncomfortable. In addition this tank is 72 gallons so I don't see them running out of room for quite awhile. As for the shoaling, I may add more Loaches to the tank so the current one isn't lonely and exchange them as they grow up for store credit.

Clown loaches can reach 6 inches in a couple of years and then growth slows.
Why not exchange the loach for a species more suited to the tank.
Y sidthimunki are great or if you want larger type look for B histrionica. Both of these are active by day & eat snails.

Thanks for the recommendation, I did some googling and they look like a pretty cool Loach. My biggest reason for purchasing the Clown was for Snail control, but I see I have more to consider in the long run. I will do some more searching and maybe swap him out for something more appropriate.

For me, plants are always a struggle... I might try and do something like what you did as far as building a C02 system. Very impressive tank, I hope it's still in running order!_________________http://auditorandagentleman.blogspot.com - now with 100% more fish.
Solving the Problem from the Inside - Proud Pet-Store Fishkeeper